Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
11/06/2024, 02:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe
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Size
45KB
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MD5
2b4c8fb3e423606607c3677018e2cd4b
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SHA1
a405c74d0ffacc7033384b3d951ceb73edf3aeb8
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SHA256
2fe1db3ef4c8be357a8f1498767af645beec509ad7c0be43594baeb0a96daaf3
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SHA512
bfcbe74dc11fc2c121865c57783f56150c4a8b74e42470d6354b8806c40f4887f0c427a9ef945ca90a41ff9f4cc34225ec13f6be2d4b45f3f3f629a442608783
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBVaD3TP7DFHuRcD9HkB:X6QFElP6n+gJQMOtEvwDpjBmzDkWDtY
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022fbf-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000a000000022fbf-12.dat CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3906287020-2915474608-1755617787-1000\Control Panel\International\Geo\Nation 2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4784 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4956 wrote to memory of 4784 4956 2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe 81 PID 4956 wrote to memory of 4784 4956 2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe 81 PID 4956 wrote to memory of 4784 4956 2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe 81
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_2b4c8fb3e423606607c3677018e2cd4b_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4956 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:4784
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
45KB
MD5dc29ee9a5f218b739d83ce2226349ffe
SHA1f1e8fa8fe64c0fc23272a06f335529ac674e5ee5
SHA256698acf8a71542aa2dc32797a508b5e124b5d9266593bb5ea9fc66ddd7b8e9c73
SHA512150173a271d1c86391cc9abc2ea4298d8779aa0fe55c25150ad36b0b2d7a45fa757c5d0bd9ce49f4dac1252687c10cabc1c6bfcb1de0eee5f4c39c729961e234